Updated 5 October 2026: Estimate how a pension salary sacrifice could change take-home pay, Income Tax and employee National Insurance in 2026/27. This calculator is for a standard employee in England, Wales or Northern Ireland and compares tax before and after the sacrifice.
💰 Salary Sacrifice Pension Calculator 2026/27
Compare the amount exchanged into your pension with the estimated reduction in take-home pay after Income Tax and employee NI savings.
Your estimated monthly comparison
Your employer may also save employer National Insurance when cash salary is sacrificed. Some employers add some or all of that saving to pension contributions, while others do not. This calculator does not assume an employer top-up.
The standard pension annual allowance is £60,000 for 2026/27, but employer contributions and defined-benefit pension growth can count towards it, and some people have a tapered annual allowance or Money Purchase Annual Allowance. Salary sacrifice can also affect earnings-related or statutory payments and must not reduce cash earnings below the applicable National Minimum Wage.
This calculator deliberately uses the rules for 2026/27. From April 2029, the government has announced that only the first £2,000 a year of employee pension contributions made through salary sacrifice will remain exempt from National Insurance; Income Tax relief is due to continue subject to the usual pension rules.
Figures and policy checked: 5 October 2026 • 2026/27 tax year
What is pension salary sacrifice?
Salary sacrifice, sometimes called salary exchange, is an agreement to reduce your contractual cash salary in return for a non-cash benefit. For a pension arrangement, your employer pays the agreed amount into the pension instead. Under the 2026/27 rules, this can reduce the Income Tax and employee National Insurance that would otherwise have applied to the exchanged cash salary.
How much can salary sacrifice save in 2026/27?
The saving depends on where the sacrificed earnings sit in the tax and National Insurance bands. For a standard employee in England, Wales or Northern Ireland, employee NI is generally 8% between £12,570 and £50,270 and 2% above £50,270. Income Tax is normally 20% in the basic-rate band, 40% in the higher-rate band and 45% above the additional-rate threshold.
Example: £45,000 salary and £200 monthly sacrifice
Exchanging £200 a month means £2,400 a year is redirected from cash salary into the pension in this simplified example. Because this slice sits within the basic Income Tax and main employee NI bands, the model estimates £672 a year of Income Tax and employee NI avoided. That means the £2,400 pension contribution corresponds to an estimated £1,728 reduction in annual take-home pay, or £144 a month.
Why can the saving be different for higher earners?
At higher earnings, the sacrificed amount can move through different Income Tax and NI bands. Above £100,000, the Personal Allowance is reduced by £1 for every £2 of adjusted net income until it reaches zero at £125,140. A salary sacrifice that genuinely reduces adjusted net income through this range can therefore restore some Personal Allowance as well as reducing taxable pay. Other taxable income can affect adjusted net income, so salary alone is not always enough to determine the result.
Does my employer add its National Insurance saving?
Not necessarily. Employers also pay National Insurance and can currently save employer NI on qualifying salary sacrifice. Whether your employer adds any of that saving to your pension depends on the scheme. This MoneySavvyUK calculator deliberately shows only the amount of salary exchanged and the employee’s estimated Income Tax and NI effect.
Can everyone use salary sacrifice?
No. Your employer has to offer the arrangement and you need to agree to the contractual change. HMRC also states that salary sacrifice must not reduce cash earnings below the applicable National Minimum Wage. A lower contractual salary can affect some earnings-related benefits, statutory payments or other salary-linked calculations, depending on how your employer’s scheme works.
What is the pension annual allowance?
The standard pension annual allowance is £60,000 for 2026/27. However, pension input from employers can count towards the allowance, and different limits can apply to some high earners or people who have flexibly accessed a defined-contribution pension. Do not use this calculator as a recommendation to contribute a particular amount.
What changes in April 2029?
The government has announced a change from 6 April 2029. Only the first £2,000 a year of employee pension contributions made through salary sacrifice will remain exempt from National Insurance. Salary sacrifice above that limit will attract employee and employer NI under the announced rules, while Income Tax relief on pension contributions is due to remain subject to the usual pension limits. This calculator is specifically for 2026/27 and does not apply the future 2029 rules.
Does this calculator work for Scotland?
No. Scottish employment income uses different Income Tax bands and rates. Employee National Insurance is UK-wide, but because the Income Tax calculation differs, this version is intentionally limited to England, Wales and Northern Ireland.
Related MoneySavvyUK calculators
Important information
This calculator is an educational comparison, not personalised pension or tax advice. It does not model your employer’s scheme rules, tax code, other income, student loans, benefits, minimum-wage hours test, tapered or money-purchase annual allowance, or the effect on every statutory or employment benefit. Check your employer’s salary-sacrifice documentation and current HMRC guidance before making a change.